| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 02/24/11 | 10-K | Form 10-K: Annual report [Section 13 and 15(d), not S-K Item 405] | 124 | |
| 02/22/11 | S-8 | Form S-8: Securities to be offered to employees in employee benefit plans | 10 | |
| 02/16/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 02/15/11 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 19 | |
| 02/15/11 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 12 | |
| 02/15/11 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 8 | |
| 02/14/11 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 20 | |
| 02/11/11 | 425 | Form 425: Prospectuses and communications, business combinations | 18 | |
| 02/11/11 | SC 13G | Form SC 13G: Statement of Beneficial Ownership by Certain Investors | 15 | |
| 02/08/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 |